Cisco AS5800 Specifications download pdf (Page 196)

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Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide

DOC-7810814=

Chapter 5 Maintenance

Replacement Procedures

Replacing a Dial-Shelf Controller Card

Caution DSC cards weigh 8.5 lb (3.8 kg) each. Use two hands when removing or replacing a DSC

card. (See Figure 5-13.)

Caution If your system is equipped with dual DSCs, Cisco recommends that you perform DSC card

replacements during low traffic periods.

Use the hw-module <shelf-id>/<slot-num> stop command to stop the backup DSC before

you remove the backup (slave) DSC.

To replace a dial-shelf controller card, complete the following steps:

Note The dial-shelf controller card can be installed in either slot 12 or slot 13; however, if you

install the replacement dial-shelf controller card in the slot that held the former DSC card,

this will accelerate the installation process.

Caution Insertion or removal of a second DSC while there is already an active DSC may result in

loss of calls.

Step 1 Attach your ESD-preventive wrist strap between you and an unpainted chassis surface.

Caution To prevent ESD damage, handle DSC cards by ejector levers and carrier edges only and

use an ESD-preventive wrist strap or other grounding device.

Step 2 Carefully align the DSC card carrier guides with the top and bottom grooves in the dial-shelf slot. Avoid

touching the circuitry or any connector pins.

Step 3 Slide the replacement DSC card into the dial-shelf slot until the ejector levers make contact with the

chassis frame. (See Figure 5-13.)

Caution When inserting or removing the DSC card, avoid unnecessary force, which can damage the

backplane connectors.

Step 4 Seat the DSC card in the backplane by pushing the card firmly until the ejector levers fold in toward the

card front panel and the front panel is flush with the chassis frame.

Step 5 Using a No. 2 Phillips screwdriver, tighten the panel fasteners. This secures the backplane connection

and ensures proper EMI shielding.

Caution Always tighten the panel fasteners on DSC cards. These fasteners prevent accidental

removal and provide proper grounding for the system.

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Cisco AS5800 Specifications Page 196